This is an original Apple battery for all models of 15" Aluminium PowerBook G4, part number A1045.
This battery has been fully charged, fully discharged and fully charged again before using Apple system profiler to determine the current capacity of the battery. This battery, when new, had a quoted capacity of 4,000mAh.
This is an grade 3-B battery. The 3 refers to the battery capacity and indicates that it currently holds 40% or more of it's original charge, in this case, more than 1,600mAh. The B refers to the cosmetic condition and indicates that although in good condition, this battery will have some moderate scratches or cosmetic blemishes.
Image shown is a stock photo and not of the item being sold.

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